Efektivitas Program Kegiatan Layanan Anak di Perpustakaan Daerah Kabupaten Deli Serdang. Mudir: Jurnal Manajemen Pendidikan, [S. l.], v. 5, n. 1, p. 86–91, 2023. DOI: 10.55352/mudir.v5i1.32. Disponível em: https://ejournal.unsuda.ac.id/index.php/MPI/article/view/32. Acesso em: 21 aug. 2026.